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ⓘ Live rates: open.er-api.com · Chart: frankfurter.app · Not for financial transactions.
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ⓘ Privacy-first: PDF files are processed locally in your browser with pdf-lib. Files are not uploaded to CalcHive. Very large PDFs may be slow on mobile.
ⓘ Images are converted locally in your browser. HEIC support depends on the browser and the bundled converter library.
ⓘ Best-effort local conversion for DOCX files. Complex layouts, tracked changes, headers/footers and embedded objects may not match Microsoft Word exactly. Nothing is uploaded.
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Saved on this device only. Passwords and QR contents are not saved.
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What you can calculate
Free calculators by category
CalcHive brings everyday calculators for money, health, dates, travel, study and quick conversions into one lightweight tool.
Split Workspace drag and resize calculators
WiFi QR create a scan-to-join network code
Date tools age, date range, relationship, work hours and pregnancy
Keyboard ready number keys work on the active calculator
50+ tools money, health, travel, study and utilities
Split Workspace drag and resize calculators
WiFi QR create a scan-to-join network code
Date tools age, date range, relationship, work hours and pregnancy
Keyboard ready number keys work on the active calculator
50+ tools money, health, travel, study and utilities
Split View for side-by-side calculators
Workspace mode with draggable panels
Keyboard input for active calculator
Dark and light mode
Installable PWA
Latest additions
Updated 26 Jun 2026
26 Jun 2026
🖼️ Image & Word Converters New
HEIC to JPEG, PNG/JPG conversion, image resize/compress and best-effort DOCX to PDF conversion added.
26 Jun 2026
📉 PDF Compressor New
Compress PDFs locally with Safe, Balanced and Smallest file modes. Before and after file sizes are shown for PDF tools.
26 Jun 2026
📄 PDF Tools New
Merge, split, extract, reorder, delete and rotate PDF pages locally in your browser — files are not uploaded.
26 Jun 2026
🌐 What Is My IP New
Find your public IP address, country, city and ISP — powered by Cloudflare's own network.
26 Jun 2026
💰 Salary Calculator: Pay Periods & Schedule New
Enter your salary as a yearly, monthly, weekly, daily or hourly rate, with a custom pay schedule for accurate take-home breakdowns.
26 Jun 2026
📐 Unit Converter: 9 New Categories New
Time, Pressure, Energy, Power, Force, Data Storage, Angle, Frequency, Density and Fuel Economy conversions added.
26 Jun 2026
💾 Three New Converters New
Data Storage, Time Unit and Pressure now have their own dedicated calculators.
17 Jun 2026
💰 Budget & Savings Calculator
Plan take-home income, monthly expenses, savings goal, surplus, savings rate and emergency fund target.
17 Jun 2026
🔗 Tool Share Button
Each calculator now has a share button near the title for copying or sharing the tool link quickly.
16 Jun 2026
📡 Internet Speed Test
Real download, upload & ping test powered by Cloudflare's global network. Compare your speed against your broadband plan.
11 Jun 2026
🔑 Hash & Encode
MD5, SHA-1, SHA-256, SHA-512, Base64, URL and Hex encoding — all running locally, nothing sent to any server.
11 Jun 2026
🕐 Time Words
Convert spoken time to digital — type "quarter past 7" or "ten to midnight" and get a live clock visual.
11 Jun 2026
🔢 Number Words
Turn written numbers into digits — "forty two thousand three hundred" → 42,300, with hex, binary and scientific notation.
28 May 2026
Local History
Recent results are saved on this device only, with copy, clear and reopen-tool controls.
28 May 2026
Mobile Header
Logo, site badge, split and theme controls now stay together in a compact mobile row.
28 May 2026
Key Feedback
Calculator keys now blink twice with a softer final glow when pressed.
27 May 2026
Split Workspace
Drag and resize calculator panels inside a full-window workspace.
27 May 2026
More Date Tools
Pregnancy, ovulation, period, relationship and work-hours calculators added.
27 May 2026
New Utility Tools
WiFi QR, QR code, password, word count, random number and unit tools are grouped for quick access.
27 May 2026
Keyboard Calculator
Number keys, operators, Enter, Escape and Backspace work on the active calculator.