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Free financial calculators for UK, US, Canada & Australia. Stamp Duty UK, ISA, 401(k), TFSA, Superannuation, FIRE, SIP, Income Tax return, Budgeting, Debt payoff, Mortgage Payoff, Investment Return, and more. No sign-up. Updated 2026.

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120 free browser-based developer utilities. No sign-up required.
Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | wealthcalculatorhub.com | devtoolstack.io |
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| Company | Startup from India · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Most financial calculators online are built for one country and haven't been updated for recent rule changes. The nil-rate band for UK stamp duty dropped from £250,000 to £125,000 in April 2025 — most calculators still show the wrong number. The 401(k) super catch-up for ages 60-63 ($43,750...
No description of DeveloperToolStack yet.
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of DeveloperToolStack yet.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Wealth Calculator Hub and DeveloperToolStack.
Wealth Calculator Hub's answer
Wealth Calculator Hub is a free consumer tool — users are individuals making personal financial decisions, not enterprise customers.
Wealth Calculator Hub's answer
Most financial calculators online are built for one country and go months without updating for rule changes.
Wealth Calculator Hub solves both problems:
Multi-country coverage in one place — UK, US, Canada, Australia and India. No other free calculator hub covers all five markets.
Updated within days of any regulatory change — not months later. The April 2025 UK stamp duty change (nil-rate dropped from £250,000 to £125,000) was live on the site immediately. Most competitors still show the wrong rates.
Full breakdowns — every calculator shows the band-by-band calculation so users can verify the number themselves, not just trust a black box.
Completely free — no sign-up, no paywall, no premium tier. Every calculator, every feature, always free.
Wealth Calculator Hub's answer
Three reasons:
Accuracy — Calculators are updated for current rules. UK stamp duty reflects April 2025 changes. 401(k) includes the 2026 IRS limits and SECURE 2.0 super catch-up for ages 60-63. TFSA shows the correct $109,000 cumulative room. Most alternatives lag 6-12 months behind actual rule changes.
Coverage — 18 calculators across 5 countries in one place. Users dealing with cross-border finances (UK expats, international workers, global investors) don't need to find a different tool for each country.
No friction — No account required. No email to verify. No premium tier blocking core features. Open the calculator, get the number, done.
Wealth Calculator Hub's answer
Five distinct audiences across five countries:
UK — Property buyers calculating stamp duty before making an offer. ISA investors comparing tax wrappers. People planning early retirement with FIRE.
US — Workers optimising 401(k) contributions, especially those aged 60-63 who can use the SECURE 2.0 super catch-up provision.
Canada — TFSA holders checking their cumulative contribution room ($109,000 if eligible since 2009) and projecting growth.
Australia — Employees modelling superannuation at the 12% SG rate and evaluating salary sacrifice.
India — SIP investors calculating mutual fund returns, home loan EMI calculations, and FIRE planning for early retirement.
Common thread: financially motivated individuals making specific decisions who need accurate numbers, not estimates.
Wealth Calculator Hub's answer
Built out of personal frustration.
I was helping a friend calculate stamp duty on a UK property purchase in mid-2025. Every calculator we found was showing the old £250,000 nil-rate band — the threshold had dropped to £125,000 in April 2025 and nobody had updated their tools.
The same pattern kept appearing across other calculators. 401(k) tools missing the SECURE 2.0 super catch-up. TFSA tools not explaining cumulative room. Super calculators still using the old 11.5% SG rate instead of 12%.
The problem wasn't a lack of calculators. It was that existing ones were consistently outdated and single-country.
So I built one hub that covers all five major English-speaking financial markets, commits to updating within days of any rule change, and stays completely free with no sign-up friction.
Wealth Calculator Hub launched in June 2026.
Wealth Calculator Hub's answer
All calculator logic runs client-side in the browser. No user data is sent to any server. No database stores calculation results.
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External articles and on-site reviews we used to compare the two products.


I was looking for a simple way to calculate SIP returns and compare different investment scenarios. The calculators were easy to use and gave results instantly. I also liked that I didn't have to create an account...
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