✦ Free Tools — No Sign-up
15 free tools for unit conversion, PDF editing and everyday calculations. Everything runs locally in your browser — no file uploads, no accounts.
Convert between common units across mass, length, temperature, volume, energy and more.
Open tool →Convert mass values in bulk via CSV / Excel file upload.
Open tool →Convert hundreds of length values at once from a spreadsheet.
Open tool →Batch-convert temperature readings across Celsius, Fahrenheit & Kelvin.
Open tool →Convert volume units in bulk — litres, gallons, cubic metres and more.
Open tool →Convert energy values in bulk — joules, calories, kWh, BTU and more.
Open tool →Convert pressure readings in bulk — Pa, bar, psi, atm and more.
Open tool →Convert JPG, PNG, WebP and other images to a PDF in seconds — no upload, fully in-browser.
Open tool →Paste or write Markdown and export a clean, print-ready PDF instantly.
Open tool →Drag and drop multiple PDF files and merge them into a single document.
Open tool →Strip author, title, and all hidden metadata from PDF files privately.
Open tool →Calculate your exact age in years, months, days — plus zodiac, birthstone, and cosmic stats.
Open tool →Estimate YouTube ad revenue for long-form videos by country, niche and duration.
Open tool →Estimate Shorts revenue by country with 2026 RPM data — daily, monthly and yearly.
Open tool →Calculate bags, batching recipes, cost estimates and rebar layouts for concrete work.
Open tool →Standard Convert is a growing collection of precision tools built for everyday use — from engineers converting units in bulk spreadsheets to students calculating ages and developers editing PDFs. Every tool is free, ad-light, and runs entirely in your browser. Your data never leaves your device.