The tools on ToolNook are provided for general information and convenience. Results are estimates and should not be relied on as the sole basis for any decision.
Financial calculators
Loan, mortgage, interest, savings, salary and pricing calculators use standard formulas and the values you enter. Real products include fees, rounding rules, variable rates, insurance and other terms that a general calculator cannot know. Results are not financial advice and are not an offer of credit. Always confirm figures with your lender, bank or a qualified financial adviser.
Tax and zakat calculators
Tax calculators use the rates and slabs stored in our data, which we review but which can change with each budget, finance act or official notification. They do not cover every allowance, credit, exemption or special case. Zakat calculations follow common scholarly guidance, but opinions differ on some assets and on the nisab standard, and gold and silver prices change daily. Results are not tax or religious advice. Confirm your position with the tax authority, a qualified tax adviser or a scholar.
Health calculators
BMI, calorie and water intake calculators use population-level formulas. They do not account for pregnancy, breastfeeding, medical conditions, medication, age-specific needs or athletic body composition, and they are not suitable for children unless stated. Results are not medical advice, diagnosis or treatment. Speak to a doctor or registered dietitian before changing your diet, exercise or fluid intake.
Student and other tools
Grading scales and GPA conversions vary between schools, universities and countries. Check your institution's official policy before relying on a result. Converters, generators and developer tools are provided as they are; please check important output, such as code or legal documents, before use.
No warranty
We work to keep every tool accurate, tested and up to date, but we make no warranty that results are complete, accurate or suitable for your purpose. To the fullest extent permitted by law, we accept no liability for any loss arising from the use of the site. See our terms of use for details.
Advertising
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Found a mistake?
If you believe a result is wrong, please tell us with the values you entered. We take accuracy reports seriously and fix confirmed issues quickly.