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PayCalcTools vs Ohmlark

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

PayCalcTools compared with Ohmlark
DetailPayCalcTools logo PayCalcToolsOhmlark logo Ohmlark
What it doesFree pay calculators for workers and employers Electronics calculators for makers
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Freemium
PricingNot given Free: $0 forever. Pro Monthly: $4 per month, cancel anytime. Pro Lifetime: $29 one-time payment.
Key features
  • Overtime pay calculator based on US federal FLSA rules
  • Notice period calculator for UK employment law
  • Freelance day rate calculator for annual income conversion
  • Shift differential pay calculator for night shifts and weekends
  • Reverse sales tax calculator
  • Instant results with no loading time
  • No data stored or shared
  • Works on all devices
  • Full calculation breakdown included
  • Resistor Color Code: read 4, 5 and 6-band resistors or find bands for a value
  • LED Resistor: pick the current-limiting resistor and power rating
  • Voltage Divider: output voltage, loading effect, or solve R2 for target Vout
  • RC Filter: cutoff frequency, time constant and attenuation at any frequency
  • LC Resonance: resonant frequency, characteristic impedance and Q
  • 555 Timer: astable frequency/duty cycle and monostable pulse width
  • Battery Life: runtime from capacity, active/sleep current and duty cycle
  • PCB Trace Width: IPC-2221 trace width for current and temperature rise
  • Electronics Unit Converter: SI prefixes, AWG to mm², mil to mm, dBm to mW, oz copper
What makes it different
  • Based on official employment law with transparent formulas and sources
  • No sign-up, account, or data collection required
  • Completely free with no hidden charges or premium plans
  • Built for practical real-world use, not accounting expertise
  • Real E-series resistor values, not ideal numbers
  • Engineering notation input and result sharing as links
  • No ads, no tracking, no sign-up for free calculators
  • Whole-device BOM costing and battery-life summary in Pro
  • Works on phone at the bench
Community votes00
DR (Domain Rating by Ahrefs)1 −1 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)10
Citation Flow (Majestic)120
Referring domains (Majestic)110

4 details filled in for both companies.

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