About this site
About Wage Increase Calculator
This site is a single-purpose tool: it takes the pay you earn now and the raise you have been offered, and tells you the raise amount, the new pay and the percentage increase across hourly, weekly, biweekly, monthly and annual figures. Everything it produces is gross pay, before taxes and deductions, and every calculation runs inside your own browser. This page sets out exactly what the tool does, what it assumes, and the rules the site holds itself to.
What the calculator does - and what it does not
The calculator compares two gross pay figures: the pay you have today and the pay you would have after a raise. It answers three questions, which are the same arithmetic viewed from different sides:
- Given your current pay and a raise percentage, what is the raise worth and what is the new pay?
- Given your current pay and a flat raise amount, what percentage increase is that?
- Given your old pay and your new pay, what percentage raise were you actually given?
It does not model tax. It has no tax tables, no jurisdictions, no filing statuses, no pension or insurance rules. That is a deliberate boundary rather than an omission: withholding depends on where you live, what you elect and what your employer does, and a number that pretended to know those things would be worse than a clearly-labelled gross figure. Your take-home increase will always be smaller than the gross raise shown here.
Amounts are shown as plain numbers with no currency symbol, so the tool is equally usable whatever currency you are paid in. The arithmetic is currency-agnostic; the conversion assumptions below are not.
The assumptions, stated up front
To move an amount between pay cadences, the calculator converts it to an annual figure and then divides. It uses four fixed factors, which correspond to a standard full-time schedule:
- 2,080 work hours per year (40 hours per week × 52 weeks)
- 52 weeks per year
- 26 biweekly pay periods per year
- 12 months per year
These are not adjustable, and that trade-off is worth being explicit about. A fixed set of divisors keeps every result reproducible by hand and keeps the tool from silently producing a number whose basis you cannot see. The cost is that if your schedule differs - part-time hours, 24 or 27 pay periods in a year, unpaid weeks, overtime - the hourly and per-period money conversions will not match your payslip exactly.
The percentage increase is unaffected by any of this. Dividing both the old and the new figure by the same number leaves the ratio between them unchanged, so the percentage is identical in every cadence no matter which divisors are used.
Your pay figures stay on your device
The calculator is plain JavaScript running in the page you already loaded. When you press Calculate, the arithmetic happens locally in your browser. No pay figure is sent to a server, and nothing you type is stored - closing or reloading the page clears it.
This is a property of how the tool is built, not a policy promise that could quietly change: there is no submission endpoint for the form to post to. The site does use Google Analytics to count page visits, which is separate from the calculator and never sees the numbers you enter. The privacy page covers that in detail.
Editorial principles
Pay calculators are easy to pad and easy to get subtly wrong. Four rules keep this one honest.
Assumptions are stated, never buried
Every divisor, rounding decision and boundary the calculator relies on is written on the page that uses it. If a result depends on an assumption, you should be able to find that assumption without reading source code or guessing.
Formulas are reproducible
The formulas are published in full on the home page, along with a worked example whose figures the calculator reproduces exactly. You should be able to check any output with a pocket calculator. If you cannot reproduce a number shown here, that is a bug worth reporting.
No invented current statistics
This site does not quote average raise percentages, inflation rates, wage growth figures or salary benchmarks. Such numbers go stale quickly and are worse than useless when unsourced, so the site publishes arithmetic and leaves current market data to sources that maintain it.
Corrections are welcome
If a formula, a conversion or a piece of wording is wrong or unclear, please say so through the contact page. Corrections to the arithmetic and its explanations take priority over anything else on this site.
Who runs this
Wage Increase Calculator is an independent site built and maintained by a small independent developer. It is not affiliated with any employer, payroll provider, government agency or financial institution. There is no editorial staff, no sponsored placement and no advertising on the calculator itself.
The site is deliberately narrow. It does one calculation, shows its working, and stays out of the way. Questions, corrections and suggestions all go through the contact page.
Informational only - not advice
This site provides general information and arithmetic. It is not financial, tax, legal, payroll or employment advice, and nothing on it should be treated as a recommendation about your pay, your contract or your negotiations. It does not account for your jurisdiction, your employment terms or your personal circumstances.
For decisions that matter, check the figures against your own payslip and contract, and consult a qualified professional in your jurisdiction. Full terms are on the terms page.