Klein Tools Clamp Meters Ranked

Last updated: November 9, 2026

7 Klein Tools clamp meters ranked. Each one is scored and ranked against every brand in its type, so "#3 mid-size" means third of all mid-size clamp meters here, not third among Klein Tools's own.

Klein Tools makes 7 current clamp meters: 3 AC only, 2 AC/DC and 2 1,000 A and up. Prices run from $63.89 for the Klein Tools CL120 to $208.99 for the Klein Tools CL910. Its best-rated model in each size: the Klein Tools CL445 (#1 of 8 AC only, rated 3.7), the Klein Tools CL390 (#3 of 11 AC/DC, rated 3.7) and the Klein Tools CL910 (#2 of 5 1,000 A and up, rated 4.4).

Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

Klein Tools clamp meters 7

  1. Klein Tools CL910
    #2 1,000 A and up4.4Full review

    A 2,000 A, 2,000 V AC/DC clamp for solar installers and industrial electricians working on high-voltage DC.

    Amazon $208.99
    $208.99
    2,000 A2,000 ACAT IV 600 V / CAT III 2,000 V
  2. Klein Tools CL900
    #3 1,000 A and up4.4Full review

    A rugged 2,000 A AC/DC clamp that gives electricians most of a premium meter’s features at a mid-range price.

    Amazon $182.65
    $182.65
    2,000 A2,000 ACAT IV 600 V / CAT III 1,000 V
  3. Klein Tools CL445
    #1 AC only3.7Full review

    An HVAC clamp with inrush, flame-sensor microamps and a CAT IV rating at a mid-range price.

    Amazon $94.85
    $94.85
    600 ANoCAT IV 600 V / CAT III 750 V
  4. Klein Tools CL390
    #3 AC/DC3.7Full review

    An affordable true-RMS AC/DC clamp that suits DIY solar, automotive and general electrical work.

    Amazon $86.27
    $86.27
    400 A400 ACAT III 600 V
  5. Klein Tools CL490
    #4 AC/DC3.7Full review

    The CL390’s AC/DC measurements with an extra bottom display, for electricians who often read a meter at an awkward angle.

    Amazon $101.66
    $101.66
    400 A400 ACAT III 600 V
  6. Klein Tools CL220
    #3 AC only3.2Full review

    A low-cost true-RMS AC clamp for home and light electrical work, with temperature for basic HVAC checks.

    Amazon $69.97
    $69.97
    400 ANoCAT III 600 V
  7. Klein Tools CL120
    #7 AC only3.0Full review

    An inexpensive AC clamp for homeowners and apprentices who need occasional current and voltage checks.

    Amazon $63.89
    $63.89
    400 ANoCAT III 600 V

Every clamp meter ranked