About NumPad

NumPad is a collection of 22 professional-grade calculators, lookups, and reference tools built for tradespeople, healthcare workers, HR professionals, landlords, contractors, and small business owners. Where government websites are slow and confusing, NumPad is fast and readable. Where spreadsheets require setup, NumPad works instantly.

No login. No paywall. No bloat. Enter your numbers, get your answer.

Total tools22

Categories6

CostFree

Categories

📊Business4 🏥Healthcare3 🔧Trades4 🏠Real Estate3 ⚖️Legal & HR4 🔍Lookup Tools4

Free tools for working professionals

Free calculators, generators & lookup tools for business, healthcare, trades, real estate, and legal — no login required

22

free tools

6

categories

Featured tools

Business

Vending Machine Profit Calculator

Estimate modeled net operating profit and included vending-machine costs.

Healthcare

Shift Differential Pay Calculator

Estimate pay from the shift premium and hours you enter.

Healthcare

NPI Lookup

Search public NPPES provider records by NPI or name.

Trades

Wire Gauge Amp Capacity Lookup

Manufacturer-sourced ampacity references with documented limitations.

Business

Lease vs. Buy Calculator

Compare modeled lease and purchase costs over one time horizon.

Lookup

QMID Lookup (IRS Form 5695)

Search 2025 QMID codes for Form 5695 filing or amended-return use.

📊Business4 tools

Vending Machine Profit Calculator→

Estimate net profit per machine based on sales, cost, rent & restock.

Break-Even Calculator→

Calculate mathematical and whole-unit break-even from entered costs and price.

Lease vs. Buy Calculator→

Compare modeled cash outlay and net cost for leasing versus buying.

USPS EDDM Route Builder→

Estimate EDDM Retail postage and campaign costs from user-entered route delivery counts.

🏥Healthcare3 tools

Shift Differential Pay Calculator→

Calculate total pay with shift premiums for nights, weekends & holidays.

NPI Lookup→

Search official public NPPES records with clear field definitions and limitations.

Nurse Overtime Pay Calculator→

Estimate pay from user-entered qualifying overtime hours, rates, bonuses & differentials.

🔧Trades4 tools

Screw & Bolt Thread Size Identifier→

Compare measured diameter and pitch with selected UNC, UNF, and ISO metric reference sizes.

Wire Gauge Amp Capacity Lookup→

Review manufacturer-sourced ampacity references with documented code limitations.

Per-Mile Cost Calculator→

Estimate modeled vehicle cost per mile for delivery or gig drivers.

Concrete Mix Calculator→

Estimate project volume and approximate 40, 60, or 80 lb bag quantities with optional waste.

🏠Real Estate3 tools

Solar Panel ROI Calculator→

Calculate payback period & savings for solar installations.

Lease Renewal Letter Generator→

Generate a neutral lease renewal letter with custom dates and terms.

Rental Increase Notice Generator→

Calculate a proposed rent change and generate a neutral notice.

⚖️Legal & HR4 tools

Cease & Desist Letter Generator→

Draft a factual cease-and-desist request from the details you enter.

Incident Report Builder→

Organize user-provided incident details into a neutral factual report.

Employee Write-Up Generator→

Draft factual workplace documentation from the details you enter.

NDA Generator→

Generate a one-way or mutual non-disclosure agreement instantly.

🔍Lookup Tools4 tools

QMID Lookup (IRS Form 5695)→

Search a non-exhaustive 2025 QMID directory for Form 5695 filing or amended-return use.

NAICS Lookup→

Search the complete official 2022 U.S. NAICS hierarchy by code or Census title.

Paint Color Converter→

Search 7,591 official brand/code color records or compare HEX/RGB with CIEDE2000.

Military Time Converter→

Convert between 12-hour and 24-hour clock notation with clear midnight and noon handling.

Who NumPad Is For

NumPad is built for professionals who need fast, accurate reference data without hunting through government websites, PDFs, or outdated tools. Healthcare workers looking up NPI numbers and QMID codes for tax credits. Electricians reviewing manufacturer-sourced wire ampacity references and documented limitations. HR managers generating write-ups and incident reports. Real estate investors evaluating solar ROI. Small business owners calculating break-even points and vending machine profitability.

Every tool on NumPad is designed to give you the answer in one screen with no signup, no paywall, and no bloat. The reference material comes from manufacturer documentation, USPS guidance, IRS publications, NAICS classifications, and the same federal databases professionals use — presented in a clean interface that actually works on mobile.

Frequently Asked Questions

Common questions about NumPad's free professional calculator and lookup tools.

NumPad is a free collection of professional calculators, generators, and lookup tools built for working people — nurses, contractors, landlords, gig drivers, small business owners, and HR professionals. Every tool is free to use with no login, no paywall, and no signup required. Enter your numbers and get your answer.