Every free FinCalcHub calculator in one place — grouped by what you're trying to figure out. All run in your browser, support USA, UK and South Africa, and need no signup.
Every calculator on this page runs the actual formula a payroll system, lender, or pension administrator would use, against the current published bands and rates. Switch region with one click — USA / UK / South Africa — and the tax tables, contribution caps, and currency labels change in place. No signup, no paywall, no values transmitted off your device.
Pick the calculator that matches the decision you are making right now. If you are trying to figure out whether your retirement trajectory works, start with the retirement-savings calculator. If you are pricing a mortgage offer, start with the mortgage calculator and then the loan-payoff calculator to see what extra contributions buy you. If you have credit-card debt, start with the credit-card-payoff calculator before anything else — the cost of high-APR debt almost always exceeds the return on any savings strategy until the debt is gone.
For anyone earning across multiple jurisdictions (most expats, many remote workers, anyone with a foreign property or pension), the take-home-pay comparison and the regional variants of each calculator are where the real value comes from. Standard finance content is written for one country at a time; this site is built around the idea that the same person often has US, UK, and SA personal-finance questions in the same week and deserves consistent answers across all three regimes.
Project the future value of your money so you can make decisions today that hold up in 10, 20, or 40 years.
Deeper reads: Compound interest explained · The 4% rule · How much to save by 35 · Retiring at 55 · Retirement planning in South Africa · UK State Pension · 401(k) employer match · Building wealth in your 30s · How inflation erodes savings
Plan the next month and the next year. See where your money is going and how to redirect it to what matters.
Deeper reads: The 50/30/20 rule · Creating a monthly budget · How much to save each month · How much emergency fund · Saving for a house deposit
See exactly when each loan is paid off and how much extra payments save in interest.
Deeper reads: Debt avalanche vs snowball · How to pay off credit card debt · Should you pay off your loan early?
Run the numbers on the biggest purchase of your life — repayment, total interest, and what you can actually afford.
Deeper reads: How much house can I afford? · UK stamp duty · Rent vs buy · Saving for a deposit
Pull everything you own and everything you owe into one number, then track it.
Deeper reads: Average net worth by age · What net worth at 40? · Building wealth in your 30s
Compare gross to net across regions and see what each deduction is doing to your salary.
Deeper reads: Salary after tax · UK National Insurance · UK Personal Allowance 2024/25 · South Africa tax guide · What is PAYE in South Africa? · Tax on R500,000 in SA · 401(k) and your paycheck
If you are new to the site and want a comprehensive look at your finances, the most useful sequence is roughly: net worth → take-home pay → budget → emergency fund → debt strategy → retirement projection. That order builds a layered picture starting with where you stand today, what you actually take home each month, where the money goes, the buffer that protects the plan, the highest-cost debts that fight the plan, and finally the long-term trajectory.
Net worth gives you a single honest number to anchor against — pull every account, every property value, every loan, every debt into one calculation and you remove the convenient ambiguity that lets people overspend. Take-home pay shows what cash is actually arriving, which is almost always less than people assume because most personal-finance conversations use gross figures. The 50/30/20 budget split is a starting structure, not a prescription, and the budget tool lets you flex the percentages to what your situation actually supports.
The emergency-fund calculator is the most under-used tool on the site relative to its impact. A three-to-six-month buffer transforms how every other financial decision feels: contracts become negotiable, layoffs become survivable, and the temptation to liquidate retirement savings during a rough quarter disappears. If you only do one calculation today, do that one.
All calculators here use the live formulas — compound-interest pages use the standard A = P(1+r/n)^(nt) with adjustments for monthly contributions; mortgage pages use full amortisation; payroll pages use the actual published bracket structure and rebate logic for the selected region. Tax tables are reviewed annually and immediately following any official rate change. Source URLs appear on each calculator that uses published data.
The site is built around what the calculators can answer well — repeatable arithmetic and projection across known rules. It is not built to handle the parts of personal finance where the answer genuinely depends on personal circumstance: whether to take a defined-benefit pension transfer, whether to remortgage early, whether to buy or rent in a specific neighbourhood. Those decisions need a qualified adviser. The calculators here support the conversation; they do not replace it.
For broader context on the topics each calculator covers, the blog at /blog/ is organised by category. If you spot a number that does not match a primary source or your accountant's calculation, the editorial policy describes how to report corrections — substantive errors are fixed within a few days.