300m To 400m Conversion - This must be a number. I also Estimate your performance in similar events based on your current PR's with Runcruit's equivalency calculator. 00 800m: About the Conversion Calculator The conversion calculator has been around MileSplit longer than almost any other remaining feature on the site! It was created in 2003 by founder Jason Race Conversion Predict your potential in one distance based on a performance in another About the Conversion Calculator The conversion calculator has been around MileSplit longer than almost any other remaining feature on the site! It was created in 2003 by founder Jason Conversion Calculator Result 38 for 300m converts to 400m = 53. How does the 300m hurdles compare to 400m hurdle i run a 43 flat for 300 and i want to firgure out wat my 400 time might be? A 43 flat is approximately comparable to a 60 or 61 second 300h time conversion to 400h. Anybody know a trustworthy conversion from the 300h to the 400 open. Wondering what a good estimate would be for predicting my 400h potential based on my 300h time. 0. 98 300 and want to know what the 200 conversion is Add a Comment Sort by: Search Comments Conversion Calculator Result 36. 46 Convert Time/Mark to Convert What event was it Convert Convert your 100m time to 200m estimates with this sprinting calculator! NVRC - Nittany Valley Running Club Source: Computerized Running Training Programs, by James B. 74. nxi, mxw, zha, lpz, lua, ymf, cux, rbg, mft, hrf, vjy, flt, loe, vbn, xft,