SmartCalculator

Site updates

SmartCalculator is maintained continuously. This page records significant changes so you can see what was added, corrected or reviewed, and when.

  • Improved navigation between related pages: every calculator now links to related tools from within its text, relevant calculators point to our guides, guides link to each other, and each category page has a browse-by-topic section.
  • Added a cookie consent banner with Google Consent Mode. Analytics and ads stay off for visitors in the EEA, UK, Switzerland and Quebec until they agree, and anyone can change their choice from the Cookie settings link in the footer.
  • Rewrote the privacy policy, cookie policy, terms of use, disclaimer and contact page in plain language.
  • Published a new guide: How much house can I afford in Ontario?
  • Published four guides: Ontario take-home pay 2026, US take-home pay 2026, Canadian mortgage rules 2026 and an adult BMI chart.
  • Added the Ontario Health Premium to Canadian take-home pay and tax results.
  • Added share buttons to every calculator and a free embeddable calculator widget for other websites.
  • Rewrote search descriptions for every calculator so each one describes what that tool does.
  • Rewrote the explanation for all 202 calculators. Each page now has its own description, step-by-step instructions, the formula used, a worked example checked by hand, practical tips and frequently asked questions.
  • Added a sources line and review date to every calculator page.
  • Added a methodology section explaining how calculators are built, tested and updated.

  • Rebuilt 117 calculators, including tax, take-home pay, 401(k), IRA, Roth IRA, RMD, Social Security, statistics, matrix, unit conversion, time zone, GPA and IP subnet calculators.
  • Updated year-dependent figures to 2026: US federal brackets and standard deduction, 401(k) and IRA limits, Roth IRA income limits, the $15 million estate tax exemption, Canada's 14% lowest federal rate and $16,452 basic personal amount, CPP, CPP2, EI and Ontario brackets and surtax.
  • Added country rules for Canada, the United States, India, the United Kingdom, Australia and New Zealand to 18 loan and mortgage calculators, with downloadable PDF reports.
  • Rebuilt the BMI calculator with metric and US units, WHO and Asian cut-offs and a scale showing weights for your height.
  • Upgraded 26 health calculators, including pregnancy and cycle calendars, eGFR (CKD-EPI 2021) and blood alcohol estimates with country driving limits.
  • Upgraded concrete, gravel, mulch, savings, retirement, percent, Base64 and URL tools with missing features such as depth, contributions and decoding.
  • Fixed layout issues on phones and tablets and tested every page at four screen sizes.

Scheduled

  • January 2027: annual review of tax brackets, contribution limits, payroll deductions and other year-dependent figures.