These are simple one‑page tools. No login. No sign‑up. If you find something confusing, use the feedback button on any page.
Generate a professional sick day email you can copy‑paste.
Quick checks + red flags to look for before you click.
Convert salary to hourly (and back) with realistic hours.
Rough after‑tax take‑home estimate.
Estimate payoff time and interest.
Back‑of‑napkin affordability estimate.
Estimate monthly car payments.
Split a bill and tip quickly.
BMI in metric or US units.
Age in years, months and days.
Compute your current grade and what you need to pass.
Compress images for web & social. Crop + zoom included.
Printable monthly and yearly calendar (2025+).