Contents Insurance Calculator NZ: Estimate Your Sum Insured
Estimate how much contents insurance you may need by adding the current replacement value of your furniture, clothing, electronics, appliances, tools, sports gear, jewellery and other belongings. Use the editable room-by-room values to review your New Zealand contents sum insured.
Reviewed 5 July 2026 · New Zealand-specific guidance · Free calculator
- Your contents sum insured should reflect what it could cost to replace all belongings covered by the policy, not only your most expensive items.
- Small items such as clothes, cookware, linen, tools and household supplies can form a large part of the total.
- Check policy wording because some items may have individual limits, require specification, or be settled at present-day value rather than new replacement value.
How do I calculate how much contents insurance I need?
Add the current replacement cost of every belonging you would need to replace after a total loss, including GST. Review the total for expensive or specified items, then add a buffer for missed items and price changes.
Basic formula:Contents sum insured estimate = Total replacement value of belongings + chosen buffer
Cover comparison:Current contents cover − calculated rounded estimate = possible surplus or shortfall
This calculator estimates the amount of cover, not the monthly or annual insurance premium. Actual claim settlement depends on the insurer, policy wording, item limits, excesses and whether replacement or indemnity value applies.
Your household contents
The starter estimate is only a checklist aid. It uses transparent assumptions based on household size and furnishing level, not official averages. Replace every value with prices suitable for your belongings.
Your contents sum insured estimate
Estimate readyCalculating your estimate…
The five largest categories in your estimate. Edit any amount in the calculator to update the chart.
| Subtotal of belongings | $0 |
| Buffer at 5% | $0 |
| Calculated estimate | $0 |
How this Contents Insurance Calculator NZ works
The calculator adds the replacement values you enter for ten household-content categories. It then applies your chosen buffer and rounds the result up to the next $1,000 so you have a simple amount to review against an insurance policy.
The optional household-profile button loads editable starting figures based on bedroom count, household size, living situation and furnishing level. Those figures are not an average for New Zealand and are not supplied by an insurer. Their purpose is to help you avoid starting with ten empty boxes.
- Use current replacement prices. Price the closest modern equivalent rather than relying only on what you originally paid.
- Include GST. Your replacement shopping cost normally includes GST.
- Count the small items. Clothes, linen, cookware, food, books, tools and household supplies add up quickly.
- Check the settlement basis. Some policies use a mixture of replacement and indemnity value for different belongings.
- Review high-value items. Individual item or category limits can apply even when the overall sum insured is high enough.
What should be included in a contents insurance sum insured?
Imagine the home was emptied after a total loss and you had to buy everything again. A complete contents calculation should include obvious high-cost items as well as the hundreds of smaller belongings stored throughout the home.
| Category | Examples to count | Commonly overlooked items |
|---|---|---|
| Living and dining | Sofas, dining furniture, shelving, lighting and rugs | Curtains owned by you, artwork, cushions and side tables |
| Kitchen | Cookware, crockery, cutlery and small appliances | Pantry food, containers, glassware and utensils |
| Bedrooms | Beds, mattresses, drawers and bedside furniture | Linen, pillows, duvets, towels and spare bedding |
| Personal belongings | Clothes, shoes, bags, jewellery and watches | Workwear, formalwear, seasonal clothing and accessories |
| Technology | TVs, computers, tablets, phones and audio equipment | Cables, monitors, gaming accessories, printers and smart devices |
| Garage and outdoors | Tools, lawn equipment, outdoor furniture and bicycles | Camping gear, power tools, ladders and garden equipment |
| Hobbies and family items | Sports equipment, instruments, toys and baby gear | Books, craft supplies, collections and pet belongings |
AMI's current guidance says to consider furniture, clothes, electronics, appliances, gardening tools and collectables, and to include GST when working out the total. Tower also warns that smaller household items can make up a significant part of the overall value.
Replacement value versus indemnity value
Replacement cover
Replacement cover, sometimes called “as new” cover, generally aims to repair an item to an as-new condition, provide a new equivalent item, or make a cash settlement under the policy terms.
Indemnity cover
Indemnity value is closer to present-day or second-hand value. Age, condition and depreciation may reduce the settlement compared with the cost of buying a new item.
New Zealand policies can use a mixture of settlement methods. The Insurance Council of New Zealand notes that quickly depreciating or older items may not qualify for full new replacement. Check the policy rather than assuming every category is treated the same way.
Specified items, valuables and policy limits
An overall contents sum insured does not automatically remove every item limit. Insurers may cap what they pay for jewellery, bicycles, e-bikes, cameras, works of art, collectables or other valuable property unless the item is listed or “specified” on the policy.
Tower recommends checking cover after buying expensive goods and says contents policies may have individual-item limits. AMI similarly explains that items worth more than a policy limit may need to be specified for their actual value.
- Record the item description, make, model and serial number where available.
- Keep receipts, valuations, photographs and ownership records outside the home or in secure cloud storage.
- Ask the insurer whether a valuation must be recent and whether the item is covered away from home.
- Confirm whether the specified amount sits inside or in addition to the general contents sum insured.
Homeowners, renters, flatmates and landlords
Homeowners and renters
The contents calculation is based on belongings, not ownership of the building. Both homeowners and renters can use the same room-by-room replacement-cost approach.
Flatmates and students
Include only your own belongings unless your policy specifically covers other people. AA Insurance and AMI both advise people who are flatting to leave out property owned by flatmates or a landlord.
Couples and families
Make sure the policy covers the people whose belongings you have counted. Add children's clothing, devices, toys, sports gear, school items and bedroom furniture.
Landlords
A standard household calculator may not suit landlord contents. Furnishings supplied with a rental property can fall under a landlord-specific policy with different definitions and limits.
Is $50,000 contents cover enough for a New Zealand household?
There is no reliable “normal” or universal contents sum insured that suits every New Zealand home. A one-bedroom flat with modest belongings can have a very different replacement cost from a family home with several wardrobes, computers, bikes, tools, jewellery and premium furniture.
$50,000 may be enough for one household and far too low for another. The only useful test is a room-by-room inventory using realistic current replacement prices. Do not choose an amount simply because it resembles an online average or a friend's policy.
The same applies to questions about the average value of a three-bedroom home's contents. Bedroom count is only a starting clue; household size, furnishing quality, hobbies and high-value items can change the result substantially.
Does this calculator show the cost of contents insurance?
No. The result is an estimated sum insured, which is the amount of belongings you want the insurer to consider covering. It is not a premium quote.
An insurer can consider the sum insured along with the address, natural-hazard risk, chosen excess, policy type, optional benefits, payment frequency, claims information and its own underwriting model. To compare prices, use the same or similar cover amount and excess across quotes, then compare policy limits and exclusions rather than price alone.
When should you review your contents sum insured?
- At least annually, particularly before renewal.
- After buying or selling furniture, appliances, technology, jewellery, bikes or sports equipment.
- After moving house, combining households or separating shared belongings.
- When children arrive, leave home or acquire expensive devices and hobbies.
- When replacement prices have risen enough that your previous inventory is out of date.
Tower recommends an annual review and an update after significant purchases. AMI also recommends revisiting the sum insured at renewal and after buying or selling major belongings.
How to use the Contents Insurance Calculator NZ
- Choose a household profile. Enter your living situation, bedrooms and number of people.
- Load the optional starter estimate. Treat it only as an editable checklist aid.
- Review every category. Replace the figures with the cost of buying suitable equivalent belongings today.
- Add expensive and overlooked items. Include wardrobes, cookware, linen, tools, hobby equipment and household supplies.
- Choose a buffer. Add your preferred margin for missed items and price changes.
- Compare current cover. Enter your existing sum insured to identify a possible gap.
- Check the policy wording. Confirm replacement basis, indemnity categories, item limits, specified items and excesses with the insurer.
Sources and methodology
This independent calculator uses values entered by the user. The optional starter values are internal assumptions displayed only to create an editable starting checklist. They are not drawn from insurer databases and should not be described as New Zealand averages.
Contents Insurance Calculator NZ Frequently Asked Questions
List every belonging you would need to replace after a total loss, group the items room by room, enter realistic current replacement prices including GST, and add the categories together. Then review item limits and add a margin for anything missed.
The amount should be based on your own belongings rather than a national average. It should be sufficient for the items you have counted under the settlement terms and limits of the policy you choose.
It may be enough for some households but inadequate for others. Add your furniture, clothing, technology, appliances, tools, bikes, jewellery and smaller household items before deciding whether $50,000 is suitable.
There is no single reliable average that should be used as a personal sum insured. Household size, furnishing quality, hobbies and valuables vary too widely. A room-by-room inventory is more useful than an average.
Include furniture, clothing, footwear, bedding, cookware, electronics, appliances, tools, outdoor equipment, bicycles, sports gear, books, toys, jewellery, art, collectables, food and other household supplies that fall within the policy definition of contents.
For a replacement-value estimate, use the current cost of buying a suitable equivalent item, including GST. However, read the policy because some belongings may be settled at indemnity or present-day value.
Not necessarily. Policies can impose individual-item or category limits. Jewellery, bicycles, cameras, art and collectables may need to be specified separately for their full value.
Usually, each person should count only the belongings covered for them by the relevant policy. Flatmates and students should not automatically include property owned by other flatmates or the landlord.
No. It calculates an estimated sum insured, not a premium. You can use the result as a consistent starting amount when requesting quotes, then compare excesses, item limits, settlement terms, exclusions and optional benefits.
The premium varies by insurer and risk details. The sum insured, address, selected excess, policy level, optional benefits, payment method and underwriting factors can all affect the price. Obtain current quotes for your circumstances.
Review it at least annually and after large purchases, moving, combining households, selling expensive belongings or major changes in replacement prices.
No. It is a general estimation and inventory tool. It does not assess policy suitability, confirm claim coverage, determine premium or replace advice from an insurer, broker, adviser or valuation professional.
This calculator is a general guide only. It does not provide a quote, financial advice, insurance advice or a guarantee that a claim will be paid. Policy definitions, replacement conditions, indemnity value, individual item limits, specified-item requirements, excesses and exclusions vary. Review the policy wording and speak with the insurer or broker before setting or changing cover.