calc.engineer
engineer.calc/calc
88 free engineering calculators: RF link budgets, LoRa/Meshtastic, PCB, solar, homelab. Keyless.
Description as published in the official MCP registry.
Answers the MCP handshake and lists its tools. Checked 2026-10-04.
What we measured
| Endpoint | https://calc.engineer/mcp | registry |
|---|---|---|
| Handshake | Answers the MCP handshake and lists its tools (2,763 ms) | our check, 2026-10-04 |
| Protocol version | 2025-11-25 | our check, 2026-10-04 |
| Tools (89) | fspl, link_budget, dipole, microstrip, dbm_convert, noise_figure_cascade, vswr, attenuator_pi, attenuator_tee, fresnel_zone, wavelength_freq, spice_template, spice_simulate, lora_airtime, snr_margin, channel_utilization, lora_range_estimate, lora_sensitivity, duty_cycle_budget, meshtastic_range, eirp_compliance, meshtastic_power, lora_param_optimizer, zfs_capacity, zfs_ram, tcp_throughput, wireguard_mtu, subnet_calculator, raid_iops, power_cost, cooling_btu, rack_capacity, network_bandwidth, thermal_enclosure, heatsink_cfd, pcb_thermal, battery_life, wire_gauge, solar_sizing, ups_runtime, mah_to_wh, watts_to_amps, voltage_drop, battery_charge_time, solar_load_audit, solar_roi, battery_autonomy, string_sizing, generator_offset, wire_ampacity, inverter_sizing, pcb_layout, voltage_divider, rc_filter, lc_resonance, impedance_match, trace_width, ohms_law, resistor_color_code, led_resistor, timer_555, op_amp_gain, capacitor_charge, pcb_via_current, power_supply_decoupling, log_calc, sig_figs, scientific_notation, percentage_calc, percentage_increase, exponent_calc, square_root, circumference, slope_calc, pythagorean_theorem, p_value, confidence_interval, sales_tax, salary_to_hourly, loan_amortization, compound_interest, test_grade, square_footage, unit_convert, hex_converter, timestamp_converter, bmi_calculator, tip_calculator, date_difference | tools/list, 2026-10-04 |
| Registry version | 1.0.0 · active · updated 2026-07-18 | registry |
Signed reports
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Connect
claude mcp add --transport http calc https://calc.engineer/mcpCommands are built from the registry entry. Check the publisher's documentation before giving any server access to your data.
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Agents can read this page as data: MCP endpoint https://openforallofus.com/api/mcp, tool get_tool with name engineer.calc/calc.